Sash-lock.



'A'. CJHENDRICKS.

sAsH LOCK.

APPLICATION FILED JULY 29, 1912 1,058,584. Patented Apr. 8, 1913.

Ill A WITNESSES ATTORN EY UNITED STATES ADAM C. HENDRIGKS, OF HAGERSTOWN, MARYLAND.

sAsH-LooK.

Specification of Letters Patent.

Application filed. July 29, 1912. Serial No. 712,132.

To all culi-0m t may concern:

Be it known that I, ADAM C. I-InNoniois, a citizen of the United States, residing at Hagerstown, in the county of Washington and State of Maryland, have invented a new and useful Sash-Lock, of which the following is a specification.

My invention relates to improvements in sash locks, and has for its object to provide a device of this character which will automatically lock when the window is closed and can be instantly released from the inside, but will be proof againstany attempt to open from the outside.

Further the operating parts of the lock are simple, and their construction and arrangement such that they are not likely to get out of order.

In the accompanying drawings: Figure 1 is a perspective view of my sash lock showing it mounted on and locking the meeting rails of the sashes of a window. Fig. 2 is a vertical sectional view on the line 22, Fig. 1. Fig. 3 is a horizontal sectional view on the line 3-3, Fig. 2. Fig. 4 is a bottom plan view of the same. Fig. 5 is a perspective view of the casing of the sash lock with a side plate and the interior parts removed. Fig. 6 is a perspective view of the operating lever detached.

Referring to the drawings, which illustrate the preferred embodiment of my invention, 10 designates the housing or casing which is oblong with its top corners rounded. The base 11 of the casing terminates short of the back of the casing thereby forming a bolt opening 12. The base is extended at each side providing outstanding lugs 13 each having a perforation for securing means, as screws. The casing 10 is mounted on the top rail of the lower sash with the lugs 13 extending longitudinally of the rail, and is positioned so that the opening 12 in the casing extends out substantially flush with the meeting edge of the rail.

At a point within the casing is located a rigid cylindrical projection or boss 14, which extends the width of the casing and is provided with a flattened, longitudinally-extending incline plane or locking face 15, which is inclined upwardly and away from the bolt opening 12. The front wall of the casing 10 is provided with an oblong aperture 16, which is in line with and of greater width than the diameter of the boss 14.

Mounted on the boss 14 is an operating le- 4walls 21 and l ver 17. It comprises an approximately cylindrical body portion 18 having therein a `circular hole 19 to receive the boss 14 and is provided with a segmental opening 20 which constitutes a pocket having top and bottom a side wall 21a, said pocket `'leading from said circular hole 19. Extending from the upper side of the lever at its rear end is an upstanding lug 22, which 1s provided with a rearwardly-extending teat23. Mounted on the teat 23 is one end of a coil spring 24, the other end of which bears against .the front wall of the casing `and is held from displacement by an inwardly projecting ledge 25 formed at the upper wall of the opening 16. The handle 26 of the operating lever, which extends through the opening 16, project-s outwardly beyond the fro-nt wall of the casing.

Mounted within the pocket 2O is aV cylin- Patented Apr. 8, 1913.

drcal roller 27, which coperates with a vertical locking face 28 formed on the inside of the thickened rear wall of the'casing 10. The lower part of thevthickened 'portion is beveled downwardly and outwardly as at 29 and joins with the locking face. The upper end of the beveled part 29 terminates below the normal engaging position of the roller 27.

In order to aord ready access to the casing, one side 30 thereof is made removable, and is held in position by means of a screw 31, which passes through a hole therein, and enters a threaded hole in the boss 14.

Mounted on the lower rail of the upper sash is a vertically-extending, flat, narrow post 32. The vpost is provided at opposite sides of its base with lugs 33, each provided with a hole to receive suitable fastening means to secure the post in position. The post is provided just beneath its base with a short horizontal lug 34 which extends in front of and at right angles to the post and is adapted, when the window is closed, to enter a depression 35 formed about the opening 12 in the bottom' of the casing 10, thus overlapping the base and eifectually closing the opening 12 of the casing and preventing the insertion of an implement to release the lock.

In order to afford space for the post 32 andthe lug 34 when bringing the two meeting rails together, the meeting rail of the lower sash is provided with a narrow, vertical groove 36, which leads to the opening ll2 in the casing. It will be noted from the drawings that the lugs 33 of the post 32 are depressed below the plane of the lower end of the post thereby forming a pocket in which is positioned the lug 34, so that the bottom of the lug 34 and the bottoms of the lugs 38 are on a common plane, thereby insuring a close and even fit o-f the parts when the lug 3/1 rests in the depression 35 in the bottom of the casing 10.

rI`he operation of my sash lock is very simple yet effective, the locking of the meeting rails taking place automatically when closing the window.

lVhenever the meeting rails are brought t-ogether, as in closing the window, the upper end of the post 52 enters the bolt opening 12 and contacting with the beveled edge Z9 is guided to the vertical locking face 28 against the lower part of which the roller 27 rests when the window is open. The continued upward movement of the end of the post raises the roller together with the inner or pocket end 20 of the operating lever 17 and consequently compressing the coil spring 24 until the space between the vertical locking face and the roller is sulficiently wide to permit the post to pass, when the upward movement of the roller will cease. From this arrangement it follows that while the roller readily travels up the inclined locking face 15 to afford sufficient space for the post to pass, yet an attempt to open the window without first depressing the handle 26 of the operating lever will prove ineffective, since any downward pull to which the post may be subjected will only tend to move the roller downward thereby more firmly binding the post between the locking faces 28 and 15 and the roller 27. By simply depressing the handle 26 of the operating lever, the roller will be instantly lifted from out of engagement with the post to permit the window to be opened, and then on releasing the pressure on the handle the spring 24 will instantly force the roller carrying end of the lever down to place the roller in position for the next closing of the window.

'Ihe construction and operation of my operating lever and its` component. parts will be found especially effective. The fact that the spring is entirely out of the way of the post will protect it from injury or displacement.

Owing to the close adjustment of theparts of my sash lock it is possible to firmly lock the window without inserting the post fully in the casing, thus permitting the sashes to be left slightly open to allow for ventilation.l

' What I claim is:

1. In a sash lock, a casing provided with a locking face, a laterally extending cylindrical boss positioned within said casing and provided with an inclined locking face arranged opposite the locking face of the casing, an operating lever provided with a hole to receive said boss as a pivoting means, said lever having an open ended pocket formed at its inner end, said pocket communicating with the boss at the inclined locking face, a roller loosely mounted in said pocket and projecting therefrom and adapted to engage with the locking face of the boss, and a spring adapted to bear against the lever to" force the end of the lever carrying the roller downwardly, whereby the roller normally rests against thelocking face of the casing, and a post adapted to be rcleasably secured between the locking face of the casing and the roller.

2. In a sash lock, a casing provided at its rear wall with a vertical locking face, a boss provided with an inclined locking face, an operating lever mounted on said boss and having an opened-ended pocket formed at its inner end and leading to the said inclined face of the boss, a roller mounted in the said pocket and projecting from the end of the pocket of the lever, a spring bearing against the lever and casing to normally force the end ofA the lever carrying the roller downwardly, and a post adapted to be releasably secured between the locking face of said casing and said roller.

8. In asash lock, a casing provided with a locking face, an outstanding boss positioned within said casing and provided with an inclined locking face, an operating le ver pivotally mounted on said boss, said operating lever being provided at its inner end with an open-ended pocket positioned between said locking faces, a roller loosely mounted in said pocket, said casing being provided in its front end with an opening in line with said boss through which opening the handle of said operating lever projects, a removable side to said casing, said side being detachably secured to said boss to permit the lever to be laterally removed therefrom, and a post adapted to be releasably locked in said casing by the roller in coperation with the locking faces.

t. In a sash lock, a casing provided with a locking face, av laterally extending cylindrical boss positioned within said casing and provided with an inclined locking face arranged opposite the locking face of the casing, an operating lever provided with a hole to receive said boss as a pivoting means, said lever having an opened-ended pocket formed at its inner end with the pocket communicating with the boss at the inclined locking face, a roller loosely mounted in said pocket and projecting therefrom, means for limiting the movement of said lever to prevent the open end of said pocket from being moved past the inclined locking face of the boss, a lug formed at the top of the inner end of said lever, a spring adapted to bear against the lug to normally In testimony, that I claim the foregoing force the end of the lever Carrying the roller` as my own, I have hereto aXed my signadoWnWardly, whereby the roller normally ture in the presence of tWo Witnesses.

rests against the locking face of the casing, ADAM C. I-IENDRICKS. 5 and a post adapted to be releasably secured Witnesses:

between the locking face of the casing and JOHN C. BOLINGER,v

the roller. JAMES E. S. PRYOR.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents, Washington, D. C. 

